libuuu: allow to build without git
libuuu: allow to build without git

Read .tarball-version if pressent, instead of git description.

Signed-off-by: Denis Osterland-Heim <a2cd738820c6ad1e944e890109020b832855bbcf@diehl.com>

NXPmicro/mfgtools,NXPmicro/mfgtools,NXPmicro/mfgtools